Brake structure



Marh 7, i950 C, HOLLERITH 2,499,585

BRAKE STRUCTURE Fi1 ed April 22, 1946 /f 6 Z0 ,el 2/ www 9 ,4 5' CHARLES HOLLERITH @M @MW Patented Mar. 7, 1950 l y UNITED STATES PATENT OFFICE 2,499,585 BRAKE STRUCTURE Charles Hollerith, Jackson, Mich., assgnor, by

mesne assignments, to The B. F. Goodrich gonrxpany, Akron, Ohio, a corporation of New Application AprilV 22, 1946, Serial No. 663,993

Claims. (Cl. 18S-152) 1 2 The present invention relates to an improvethe character disclosed in my aforesaid co-pendment in brakes and particularly to improvements ing application and more particularly in my Patin high pressure hydraulic brakes o the type in ent No. 2,350,038, issued May 30th, 1944. The which a radially expanding element acts upon a sides of the channel 4 are provided with depressed brake block or its equivalent to radially move 5 portions Il) and II at which are anchored springs the same into engagement with a brake drum. I2 extending through slots I3 in the ends of the The invention constitutes particularly an im brake blocks 9 for anchoring the brake blocks 9 provement over the construction disclosed in my in the channels 4 and for resiliently holding the co-pending application Serial No 526,698, iiled brake blocks 9 inwardly, all as disclosed in my March 16, 1944, now Patent No. 2,423,315, dated 10 aforesaid patent.

July 1, 194'?. The structure in said copending The brake blocks 9 are urged radially outapplication discloses a cast ring on which brake wardly by a sealing ring I5 preferably of rubber, blocks are supported and in which is disposed a either natural or synthetic, under the action of radially outwardly movable actuator for the brake hydraulic uid under pressure. Hydraulic iiuid blocks. According to the present invention the under pressure is introduced through a coupling cast ring is made of two parts having novel form I6 which communicates through ports I1 and I8 and associated structure. in the rings 6 and 5 respectively. Ports I1 and An object oi the present invention is to pro- IB communicate with the channels I4 as shown vide a brake structure having a peripheral supparticularly in Fig. 2. A helical spring 2i in port for brake blocks, said peripheral support each channel I4 and inwardly of the sealing ring being of two parts. I5 maintains a space at the inner sides of the Another object of the invention is to provide channels I4 so as to provide at all Vtimes a clear aperipheral support for brake blocks wherein passage for hydraulic fluid therein. there are provided communicating ports for con- The brake blocks 9 are provided with annular ducting fluid pressure, said communicating ports .35 radially inwardly extending ring portions 22 being connected by a telescoping connecting which project into the channels I4. Inwardly of sleeve therein. the ring portions 22 are disposed a plurality of Another object of the invention is to provide circumferentially aligned and overlapping strips an improved connector for communicating ports of metal 23 to afford a continuous surface for the in separate members. 3o sealing ring I5 to bear against so that they will These and other objects residing in arrangenot tend to extrude into the spaces between the ment, combination and construction of the parts brake blocks 9. will be apparent from the following specification A particular feature of the invention is the and claims when taken with the accompanying connecting sleeve I9 between the ports I1 and drawing, in which I8. The sleeve I9 is provided with sealing rings Fig. 1 is a side elevation of the invention partly 20 mounted in annular grooves in the parts therebroken away to Show detail, of in telescoping relation with the respective ports Fig. 2 is a section on the line II-II of Fig. 1, I1 and I8. The sleeve I9 affords a leak-prooi Fig. 3 is a section on the line IIL-III of Fig. 1 connector between the ports I1 and I8. It will be and o observed that the ports I1 and I8 are provided Figure 4 is a fragmentary section showing the with radially enlarged sections for receiving the telescoping connecting sleeve and associated port sleeve I9 so as to limit the telescoping motion structure on an enlarged scale. thereof with respect to the ports I1 and I8.

Referring particularly to the drawing, the ref- The invention has been disclosed particularly erence character I indicates a torque spider coni5 as related to a specifically described form of brake structed of two sheet metal members 2 and 3 structure. It is to be understood that not only which are formed at their peripheries to provide is it not limited to brake structure, but also may a channel 4. The channel 4 supports therein have even wider application.

two contiguous rings 5 and B which are provided Having thus described my invention, what I with interlocking shoulders 1. A plurality of 5c desire to secure by Letters Patent and claim is:

circumferentially spaced bolts 8 extend through 1. A radial' brake assembly comprising a main the channel 4 and the rings 5 and 6 to secure peripheral portion, a radially expansible and the same together. contractible brake element supported on said pe There are mounted on the periphery of the ripheral portion, said portion including a pair of contiguous means each dening a narrow rarings 5 and 6 a plurality of brake blocks 9 of 5 dially walled channel opening radially outward and being directly adjacent to and briged by said brake element, an annular sealing means in each of said channels and adapted to be radially displaced therein, means for directing uid pressure into said channels against said sealing means Ito radially displace the same in said channels to forcefsaid brakeelement outwardly, said means comprising communicating the other.

2. The invention as dened-in-.claiml wherein there is provided sealing meansbetween each of the ports and the connecting sleeve.

3. A brake assembly of the character-described comprising a radially expansible and contractible brake element and a peripheral portion :supportgrooves, and means to intr duce fluid pressure into said grooves/behind said sealing means to force the same radially outwardly to move said brake element, said intro- .d-ucingrmeans .comprising communicating ports in said rings, a connecting sleeve telescoped into for providing -a continuous passage from oneport to the other, and sealing meansbetween said ports .respectively and said sleeve.

4. In .-a brake of -thevcharacter described, a

plurality .of brake blocks adapted to be moved tion aiording a .backing :for said brake block, each cylindrical .member having an annular groove therein. facing outwardly, resilient annular sealing. means. d1sposed joint` between said;members` for tinuous passage therebetween.

f CHARLES JHOLLERITH. REFERENCES 'CITED The following references are of recordfin the le ofthis patent:

UNITEDJSTATES PATENTS Number Name .Date .1,484,355 .Mor Feb. 19, 1924 2,154,497 Durham Apr.'ll8,1939 2,174,724 Hunter Oct 3, 1939 .2,203,862 .Eason .J.une` 11, 1940 l2,213,383 Canfield Sept. 3, '19.40 2,324,688 Finlayson .Julyv20, 1943 2,401,488 Lewis .Jimef4, 1946 `2,410,029 Ho11erith,.. Oct. :29, 1946 2,423,315 :Hollerith.. 4 July 1, 1947 FOREIGN PATENTS Number Country Date l:42,060 iGermany of Y1888 

